195664298943 has 16 divisors (see below), whose sum is σ = 274638869120. Its totient is φ = 123567412896.

The previous prime is 195664298927. The next prime is 195664299013. The reversal of 195664298943 is 349892466591.

195664298943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 195664298943 - 2⁴ = 195664298927 is a prime.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195664298903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 602721 + ... + 868677.

It is an arithmetic number, because the mean of its divisors is an integer number (17164929320).

Almost surely, 2^195664298943 is an apocalyptic number.

195664298943 is a deficient number, since it is larger than the sum of its proper divisors (78974570177).

195664298943 is a wasteful number, since it uses less digits than its factorization.

195664298943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278886.

The product of its digits is 100776960, while the sum is 66.

The spelling of 195664298943 in words is "one hundred ninety-five billion, six hundred sixty-four million, two hundred ninety-eight thousand, nine hundred forty-three".